Attention-Deficit Hyperactivity Disorder and Comorbid Mental Health Conditions Associated with Increased Risk of Injury

Table 5

Rate of injury among ADHD cases according to the number of comorbid mental health problems.

	No.	%	Injury rates %	Rate ratio^†	95% confidence interval^†
ADHD only	8,118	48.25	18.99	1.00
ADHD +1	4,850	28.83	20.21	1.06	0.99–1.14
ADHD +2	3,269	19.43	24.53	1.30	1.20–1.40
ADHD +3	517	3.07	31.72	1.65	1.43–1.90
ADHD +4 or more	70	0.42	42.86	2.29	1.68–3.12

^†Adjusted for age, sex, salary, and year.